Improvement in windows



A. H. PETERSON.

WINDOW.

rate ied May 16, 1876.

UNITED STATES PATENT OFFICE.

ALBERT H. PETERSON, OF PHILADELPHIA, PENNSYLVANIA. a

IMPROVEMENT m wmoows.

Specification forming part of Letters Patent No. 177,4 20', dated May16, 1876 application filed January 8, 1875.

To all whom it may concern Be it known that I, ALBERT H. PETERSON, ofPhiladelphia, Pennsylvania, have invented an Improved Window Frame andSash, of which the following is a specification:

The invention consists of a Window frame and sash having beveled contactedges, in combination with a pressure-strip, in a' groove formed in theedge of the sash, and guidepins and pressure-springs in sockets alsoformed in the edge of the sash, substantially as is hereinafter shownand described.

Figure 1 is a view of a window frame and sash sectioned on one side, toshow the im provements. Fig.2is a top view of a window frame and sash,one side being sectioned on the line a a, Fig. 1. Fig. 3 is a view ofthe pressure strip and guide-pins.

A is a window-frame, and B the sash, of the pattern used inrailway-cars. A groove, b, is formed in one or both of the side edges ofthe sash, which can extend the entire length of the sash or only aportion of it, as represented in length by the line cal, and-in depth bythe oii'set or shoulder e. O is a pressurestrip in the groove 12. Itsguide-pins f take into suitable openings 9 in the sash, and keep it fromslipping from the groove when the sash is raised or lowered. h aresprings, which are placed over the guide-pins fin the o enin 's Theypress the strip (3 a ainst P 2: J a:

the bottom of the groove in the frame.

When pressure-strips are used only 011 one side of the sash, thesprings, when pressing the strip against the bottom of the groove 73 inthe frame, also push the sash over until its opposite edge pressesagainst the bottom of the groove in the opposite side of the frame; butwhen pressure-strips areemployed on both the opposite edges of the sash,then the springs will force .the pressure-strips in the grooves of theframe, and cause the sash to be suspended between them on the pinsf.The'grooves in the sash and the pressurestrips can be of any transversesection. The pressure-strips can be of wood, metal, or other materialthat will slide freely in the grooves of the frame, and possess thenecessary tough ness.

As shown at Fig. 2, the edges of the sash and the bottoms j of thegrooves i of the frame are inclined or beveled to make the groove andthe sash wider at one side than at the other, so that when the springsand the pressure-strips bear respectively against the sash and thegroove the sash will be forced in the direction of the outward incline,and

thus forma perfect contact with the molding of the frame, which preventsthe'entrance of currents of air and dust;

I claim as my invention- The window-frame A and groove 6, in combinationwith the sash B, groove 1), pressurestrips 0, pins f, pin openings g,and the springs h, substantially as and for the purpose shown anddescribed.

In testimony whereof I hereunto sign my name in the presence of twosubscribing witnesses.

ALBERT H. PETERSON.

Witnesses:

. FRANCIS D. PASTORIUS,

J. J GRANDALL.

